we need to protect their environment. we have a strict quarantine system to protect the integrity of the environment. forty years on, it's still a class-a nature reserve. it's our job to look after them. ...it's my job to look after it. ♪ >>> our second story "outfront", a dire warning. the threat from drug-resistant bacteria is so serious that it could trigger a national emergency, similar to a terrorist attack. some pretty stunning words and it sure caught my attention, and "outfront" tonight, we're lucky to have dr. oz, host of "the dr. oz show." i've always wondered, people who go to the doctor every time they get sick and get antibiotics, are they causing a are problem? are we going to have all these things be resistant to antibiotics? is she exaggerating? >> she's not exaggerating. the reality is, we can't keep up with the bacteria. they're going to change much more rapidly than we develop new medications at the current pace, as we take care of people who are sicker and sicker, we get folks to survive cancer, tran